TYPES OF WATER (Cont)
Boiler Feedwater Make-up
The feedwater make-up for boilers is always softened and subsequently deaerated. It may vary in quality from fairly high dissolved solids (e.g., Zeolite-Treated), to very pure demineralized feed for high-pressure boilers. This term is more precise than “boiler feedwater”, which may include recirculated steam condensate in various ratios to fresh make-up water.